Zalman 140mm Blue LED Premium Double Blade Impeller Case Fan Cooling ZM-DF14-Blue, White/Black Dimension: 140(L)x 140(W)x 27(H)mm / Weight: 159g / Fan Speed: 600 - 1,200rpm 10% / Air Flow: 63 CFM / Connector: 3 Pin Air Pressure: 1.1mm H20 / Noise Level: 16.5 - 28dBA 10% / Bearing: EBR (Long Life Bearing) / Voltage: DC 12V / Life Span: 350,000 hrs. The dual flow created by the dual blade impeller increases the airflow for powerful cooling Performance and delivers the efficient airflow to educe noise. EBR (Long Life Bearing) applied, minimizing noise and inflow of the dust for longer life span. Different from typical system fans, the housing support is designed in the reverse direction so that Friction caused by structure can be removed for more efficient airflow. Provides 3 step rpm speed with a built-in fan controller, it can be fine tuned for superior performance or quietness. Blue or red LED with auto-blinking function applied for stunning tuning effect. Anti-vibration pad? helps to reduce the vibration efficiently & allows silent operation.